Apparently this really happened !  

The following is the transcript of an actual radio conversation in October 1995, between a US Navy ship and The British authorities near the coast of England. The transcript was released by the Ministry of Defence on 10/10/95.

BRITISH : Please divert your course 15 degrees to the South, to avoid collision.

U.S.NAVY : Recommend you divert YOUR course 15 degrees to the North, to avoid a collision.

BRITISH : Negative. You will have to divert your course 15 degrees to the South to avoid a collision.

U.S.NAVY : This is the Captain of US Navy ship and I say again, divert YOUR course.

BRITISH : Negative. I say again. You will have to divert your course.

U.S.NAVY : THIS IS THE AIRCRAFT CARRIER USS LINCOLN. THE SECOND LARGEST SHIP IN THE UNITED STATES' ATLANTIC FLEET. WE ARE ACCOMPANIED BY THREE DESTROYERS, THREE CRUISERS AND NUMEROUS SUPPORT VESSELS. I DEMAND THAT YOU CHANGE YOUR COURSE 15 DEGREES NORTH. THAT'S 15 DEGREES NORTH, OR COUNTER MEASURES WILL BE UNDERTAKEN TO ENSURE THE SAFETY OF THIS SHIP.

BRITISH : We are a lighthouse. Get lost.

Anyone know any more ?  

LOL!! I really enjoyed that one!!!

(laughs)

Yep, I heard that one a few years ago. One difference was the last line was:

"We are a lighthouse, your call, captain."

I also heard it with the carrier approaching Newfoundland rather than Britain.